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                                <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><ul><li><span class="title-icon "></span><a href="#object&#x7C7B;&#x7684;waitnotifynotifyall"><b></b>Object&#x7C7B;&#x7684;(wait/notify/notifyAll)</a></li><ul><li><span class="title-icon "></span><a href="#wait"><b></b>wait</a></li><li><span class="title-icon "></span><a href="#notifynotifyall"><b></b>notify/notifyAll</a></li></ul></ul></ul></div><h2 id="object&#x7C7B;&#x7684;waitnotifynotifyall"><a name="object&#x7C7B;&#x7684;waitnotifynotifyall" class="anchor-navigation-ex-anchor" href="#object&#x7C7B;&#x7684;waitnotifynotifyall"><i class="fa fa-link" aria-hidden="true"></i></a><strong>Object&#x7C7B;&#x7684;(wait/notify/notifyAll)</strong></h2>
<p>   &#x9664;&#x4E86;synchronized&#x4E92;&#x65A5;&#x8BBF;&#x95EE;&#x5916;&#xFF0C;&#x7EBF;&#x7A0B;&#x4E4B;&#x95F4;&#x4E5F;&#x9700;&#x8981;&#x901A;&#x8FC7;<strong>&#x534F;&#x4F5C;</strong>&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x5B8C;&#x6210;&#x4EFB;&#x52A1;&#x3002;   </p>
<h3 id="wait"><a name="wait" class="anchor-navigation-ex-anchor" href="#wait"><i class="fa fa-link" aria-hidden="true"></i></a><strong>wait</strong></h3>
<p>   <strong>wait</strong>&#x65B9;&#x6CD5;&#x662F;&#x5728;Object&#x7C7B;&#x4E2D;&#x5B9A;&#x4E49;&#x3002;&#x4F5C;&#x7528;&#x662F;&#x4F7F;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x8FDB;&#x5165;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#x3002;   </p>
<p>&#x200B;    <strong>&#x8C03;&#x7528;wait&#x65B9;&#x6CD5;&#x7684;&#x542B;&#x4E49;&#xFF1A;</strong>java&#x4E2D;&#x7684;&#x6BCF;&#x4E2A;&#x5BF9;&#x8C61;&#x9664;&#x4E86;&#x6709;&#x4E0E;&#x4E4B;&#x5173;&#x8054;&#x7684;<strong>&#x76D1;&#x63A7;&#x5668;&#x5BF9;&#x8C61;</strong>&#x5916;&#xFF0C;&#x8FD8;&#x6709;&#x4E00;&#x4E2A;&#x4E0E;&#x4E4B;&#x5173;&#x8054;&#x7684;<strong>&#x5305;&#x542B;&#x7EBF;&#x7A0B;&#x7684;&#x7B49;&#x5F85;&#x96C6;&#x5408;</strong>&#x3002;&#x5728;&#x8C03;&#x7528;wait&#x65B9;&#x6CD5;&#x65F6;&#xFF0C;&#x8BE5;&#x65B9;&#x6CD5;&#x8C03;&#x7528;&#x7684;&#x63A5;&#x6536;&#x8005;&#x6240;&#x5173;&#x8054;&#x7684;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#x662F;&#x6240;&#x4F7F;&#x7528;&#x7684;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#xFF0C;&#x540C;&#x65F6;wait&#x65B9;&#x6CD5;&#x6240;&#x5F71;&#x54CD;&#x7684;&#x662F;&#x6267;&#x884C;wait&#x65B9;&#x6CD5;&#x8C03;&#x7528;&#x7684;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x3002;&#x6210;&#x529F;&#x8C03;&#x7528;wait&#x65B9;&#x6CD5;&#x7684;&#x5148;&#x51B3;&#x6761;&#x4EF6;&#x662F;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x83B7;&#x53D6;&#x5230;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#x7684;&#x9501;&#x3002;</p>
<p>&#x82E5;&#x6CA1;&#x6709;&#x9501;&#xFF0C;&#x5219;&#x629B;&#x51FA;java.lang.IllegalMonitorStateException&#x5F02;&#x5E38;&#xFF0C;wait&#x65B9;&#x6CD5;&#x8C03;&#x7528;&#x5931;&#x8D25;&#xFF1B;&#x82E5;&#x6709;&#x9501;&#xFF0C;&#x90A3;&#x4E48;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x4F1A;&#x88AB;&#x6DFB;&#x52A0;&#x5230;&#x5BF9;&#x8C61;&#x6240;&#x5173;&#x8054;&#x7684;<strong>&#x7B49;&#x5F85;&#x96C6;&#x5408;</strong>&#x4E2D;&#xFF0C;&#x5E76;&#x91CA;&#x653E;&#x5176;&#x6301;&#x6709;&#x7684;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#x4E0A;&#x7684;&#x9501;&#x3002;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x88AB;&#x963B;&#x585E;&#xFF0C;&#x65E0;&#x6CD5;&#x6267;&#x884C;&#xFF0C;&#x76F4;&#x5230;&#x88AB;&#x4ECE;&#x5BF9;&#x8C61;&#x6240;&#x5173;&#x8054;&#x7684;&#x7B49;&#x5F85;&#x96C6;&#x5408;&#x4E2D;&#x79FB;&#x9664;&#xFF0C;&#x624D;&#x53EF;&#x7EE7;&#x7EED;&#x6267;&#x884C;&#x3002;  </p>
<p>&#x200B;    &#x7531;&#x4E8E;wait&#x65B9;&#x6CD5;&#x7684;&#x8C03;&#x7528;&#x9700;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x6301;&#x6709;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#x4E0A;&#x7684;&#x9501;&#xFF0C;&#x56E0;&#x6B64;wait&#x65B9;&#x6CD5;&#x7684;&#x8C03;&#x7528;&#x9700;&#x653E;&#x5165;synchronized&#x58F0;&#x660E;&#x7684;&#x65B9;&#x6CD5;&#x6216;&#x4EE3;&#x7801;&#x5757;&#x4E2D;&#x3002;&#x5F53;&#x6267;&#x884C;wait&#x65B9;&#x6CD5;&#x65F6;&#xFF0C;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x5DF2;&#x7ECF;&#x8FDB;&#x5165;synchronized&#x58F0;&#x660E;&#x7684;&#x4E92;&#x65A5;&#x5757;&#x4E2D;&#xFF0C;&#x5DF2;&#x7ECF;&#x6301;&#x6709;&#x6240;&#x9700;&#x7684;&#x9501;&#x3002;</p>
<p><strong>&#x5728;synchronized&#x65B9;&#x6CD5;&#x6216;&#x4EE3;&#x7801;&#x5757;&#x4E2D;&#x4F7F;&#x7528;&#x7684;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#x5FC5;&#x987B;&#x662F;wait&#x65B9;&#x6CD5;&#x8C03;&#x7528;&#x7684;&#x63A5;&#x6536;&#x8005;&#x6240;&#x5173;&#x8054;&#x7684;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;</strong>&#x3002;   </p>
<p>&#x200B;    wait&#x65B9;&#x6CD5;&#x7684;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#x5206;&#x4E3A;&#xFF1A;&#x65E0;&#x8D85;&#x65F6;&#x3001;&#x6709;&#x8D85;&#x65F6;&#x3002;  </p>
<p>&#x200B;     &#x5982;&#x679C;&#x7EBF;&#x7A0B;&#x5904;&#x4E8E;<strong>&#x6709;&#x8D85;&#x65F6;</strong>&#x7684;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#xFF0C;&#x90A3;&#x4E48;&#x7EBF;&#x7A0B;&#x9664;&#x4E86;&#x53EF;&#x4EE5;&#x88AB;&#x4E3B;&#x52A8;&#x5524;&#x9192;&#x800C;&#x79BB;&#x5F00;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#x4E4B;&#x5916;&#xFF0C;&#x8BBE;&#x5B9A;&#x7684;&#x8D85;&#x65F6;&#x65F6;&#x95F4;&#x8FC7;&#x53BB;&#x540E;&#x4E5F;&#x4F1A;&#x81EA;&#x52A8;&#x79BB;&#x5F00;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#x3002;   </p>
<p>&#x5BF9;&#x5E94;&#x7684;notify&#x548C;notifyAll&#x7528;&#x6765;&#x901A;&#x77E5;&#x7EBF;&#x7A0B;&#x79BB;&#x5F00;&#x7B49;&#x5F85;&#x72B6;&#x6001;</p>
<h3 id="notifynotifyall"><a name="notifynotifyall" class="anchor-navigation-ex-anchor" href="#notifynotifyall"><i class="fa fa-link" aria-hidden="true"></i></a><strong>notify/notifyAll</strong></h3>
<p>   &#x5BF9;&#x5E94;&#x7684;notify&#x548C;notifyAll&#x7528;&#x6765;&#x901A;&#x77E5;&#x7EBF;&#x7A0B;&#x79BB;&#x5F00;&#x7B49;&#x5F85;&#x72B6;&#x6001;   </p>
<p>&#x200B;    &#x8C03;&#x7528;&#x4E00;&#x4E2A;&#x5BF9;&#x8C61;&#x7684;<strong>notify</strong>&#x65B9;&#x6CD5;&#x4F1A;&#x4ECE;&#x8BE5;&#x5BF9;&#x8C61;&#x5173;&#x8054;&#x7684;<strong>&#x7B49;&#x5F85;&#x96C6;&#x5408;</strong>&#x4E2D;&#x9009;&#x62E9;&#x4E00;&#x4E2A;&#x7EBF;&#x7A0B;&#x6765;&#x5524;&#x9192;&#x3002;&#x88AB;&#x5524;&#x9192;&#x7684;&#x7EBF;&#x7A0B;&#x53EF;&#x4EE5;&#x548C;&#x5176;&#x4ED6;&#x7EBF;&#x7A0B;&#x7ADE;&#x4E89;&#x8FD0;&#x884C;&#x7684;&#x673A;&#x4F1A;&#x3002;&#x4E0E;notify&#x65B9;&#x6CD5;&#x76F8;&#x5BF9;&#x5E94;&#x7684;notifyAll&#x65B9;&#x6CD5;&#x4F1A;&#x5524;&#x9192;&#x5BF9;&#x8C61;&#x5173;&#x8054;&#x7684;&#x7B49;&#x5F85;&#x96C6;&#x5408;&#x4E2D;&#x7684;&#x6240;&#x6709;&#x7EBF;&#x7A0B;&#x3002;   </p>
<p>&#x200B;    Notify&#x65B9;&#x6CD5;&#x6240;&#x5524;&#x9192;&#x7EBF;&#x7A0B;&#x7684;&#x9009;&#x62E9;&#x7531;&#x865A;&#x62DF;&#x673A;&#x5B9E;&#x73B0;&#x6765;&#x51B3;&#x5B9A;&#x7684;&#xFF0C;&#x4E0D;&#x80FD;&#x4FDD;&#x8BC1;&#x4E00;&#x4E2A;&#x5BF9;&#x8C61;&#x6240;&#x5173;&#x8054;&#x7684;&#x7B49;&#x5F85;&#x96C6;&#x5408;&#x4E2D;&#x7684;&#x7EBF;&#x7A0B;&#x6309;&#x7167;&#x6240;&#x671F;&#x671B;&#x7684;&#x987A;&#x5E8F;&#x88AB;&#x5524;&#x9192;&#x3002;&#x5F88;&#x53EF;&#x80FD;&#x4E00;&#x4E2A;&#x7EBF;&#x7A0B;&#x88AB;&#x5524;&#x9192;&#x540E;&#xFF0C;&#x53D1;&#x73B0;&#x5B83;&#x5E76;&#x4E0D;&#x80FD;&#x6EE1;&#x8DB3;&#x8981;&#x6C42;&#xFF0C;&#x800C;&#x91CD;&#x65B0;&#x8FDB;&#x5165;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#xFF0C;&#x800C;&#x771F;&#x6B63;&#x9700;&#x8981;&#x88AB;&#x5524;&#x9192;&#x7684;&#x7EBF;&#x7A0B;&#x5374;&#x4ECD;&#x5904;&#x4E8E;&#x7B49;&#x5F85;&#x96C6;&#x5408;&#x4E2D;&#x3002;&#x56E0;&#x6B64;&#xFF0C;&#x5F53;&#x7B49;&#x5F85;&#x96C6;&#x5408;&#x4E2D;&#x53EF;&#x80FD;&#x5305;&#x542B;&#x591A;&#x4E2A;&#x7EBF;&#x7A0B;&#x65F6;&#xFF0C;&#x4E00;&#x822C;&#x4F7F;&#x7528;notifyAll&#x65B9;&#x6CD5;&#x3002;&#x4E0D;&#x8FC7;notifyAll&#x65B9;&#x6CD5;&#x4F1A;&#x5BFC;&#x81F4;&#x7EBF;&#x7A0B;&#x5728;&#x6CA1;&#x6709;&#x5FC5;&#x8981;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#x5524;&#x9192;&#xFF0C;&#x4E4B;&#x540E;&#x53C8;&#x9A6C;&#x4E0A;&#x8FDB;&#x5165;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#xFF0C;&#x56E0;&#x6B64;&#x4F1A;&#x9020;&#x6210;&#x4E00;&#x5B9A;&#x7684;&#x6027;&#x80FD;&#x5F71;&#x54CD;&#xFF0C;&#x4E0D;&#x8FC7;&#x53EF;&#x4EE5;&#x4FDD;&#x8BC1;&#x7A0B;&#x5E8F;&#x7684;&#x6B63;&#x786E;&#x6027;&#x3002;   </p>
<p>&#x200B;    &#x4E0E;wait&#x65B9;&#x6CD5;&#x76F8;&#x540C;&#xFF0C;notify&#x548C;notifyAll&#x65B9;&#x6CD5;&#x540C;&#x6837;&#x9700;&#x8981;&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x62E5;&#x6709;&#x65B9;&#x6CD5;&#x8C03;&#x7528;&#x63A5;&#x6536;&#x8005;&#x6240;&#x5173;&#x8054;&#x7684;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#x4E0A;&#x7684;&#x9501;&#x3002;&#x5F53;&#x7EBF;&#x7A0B;&#x88AB;&#x5524;&#x9192;&#x540E;&#xFF0C;&#x7531;&#x4E8E;&#x5728;&#x8C03;&#x7528;wait&#x65B9;&#x6CD5;&#x5B8C;&#x65F6;&#xFF0C;&#x91CA;&#x653E;&#x4E86;&#x4E4B;&#x524D;&#x6240;&#x6301;&#x6709;&#x7684;&#x76D1;&#x89C6;&#x5668;&#x5BF9;&#x8C61;&#x4E0A;&#x7684;&#x9501;&#xFF0C;&#x6240;&#x4EE5;&#x88AB;&#x5524;&#x9192;&#x7684;&#x7EBF;&#x7A0B;&#x9700;&#x8981;&#x91CD;&#x65B0;&#x7ADE;&#x4E89;&#x9501;&#x6765;&#x83B7;&#x5F97;&#x7EE7;&#x7EED;&#x8FD0;&#x884C;wait&#x65B9;&#x6CD5;&#x540E;&#x7684;&#x4EE3;&#x7801;&#x7684;&#x673A;&#x4F1A;&#x3002;   </p>
<p>&#x200B;    &#x901A;&#x5E38;&#x8981;&#x628A;wait&#x65B9;&#x6CD5;&#x7684;&#x8C03;&#x7528;&#x5305;&#x542B;&#x5728;&#x4E00;&#x4E2A;&#x5FAA;&#x73AF;&#x4E2D;&#xFF0C;&#x5FAA;&#x73AF;&#x6761;&#x4EF6;&#x662F;&#x7EBF;&#x7A0B;&#x53EF;&#x4EE5;&#x7EE7;&#x7EED;&#x6267;&#x884C;&#x9700;&#x8981;&#x6EE1;&#x8DB3;&#x7684;&#x903B;&#x8F91;&#x6761;&#x4EF6;&#x3002;&#x5982;&#x679C;&#x7EBF;&#x7A0B;&#x7EE7;&#x7EED;&#x6267;&#x884C;&#x7684;&#x903B;&#x8F91;&#x6761;&#x4EF6;&#x4E0D;&#x6EE1;&#x8DB3;&#xFF0C;&#x90A3;&#x4E48;&#x7EBF;&#x7A0B;&#x5E94;&#x8BE5;&#x518D;&#x6B21;&#x8C03;&#x7528;wait&#x65B9;&#x6CD5;&#x8FDB;&#x5165;&#x7B49;&#x5F85;&#x72B6;&#x6001;&#x3002;   </p>
<p><strong>wait</strong></p>
<pre><code class="lang-java"><span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> <span class="hljs-title">useWait</span><span class="hljs-params">(<span class="hljs-keyword">final</span> Object lock)</span> </span>{
    <span class="hljs-keyword">try</span> {
        <span class="hljs-keyword">synchronized</span> (lock) {
            <span class="hljs-comment">// &#x903B;&#x8F91;&#x6761;&#x4EF6;&#x4E0D;&#x6EE1;&#x8DB3;&#x65F6;&#xFF0C;&#x8FDB;&#x5165;&#x7B49;&#x5F85;&#x72B6;&#x6001;</span>
            <span class="hljs-keyword">while</span>(num == <span class="hljs-number">2</span>){
                lock.wait();
            }
            <span class="hljs-comment">// &#x6761;&#x4EF6;&#x6EE1;&#x8DB3;&#x65F6;</span>
            <span class="hljs-keyword">return</span> ++num;
        }
    } <span class="hljs-keyword">catch</span> (Exception e) {
        e.printStackTrace();
    }
    <span class="hljs-keyword">return</span> num;
}
</code></pre>
<p><strong>notify/notifyAll</strong></p>
<pre><code class="lang-java"><span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> <span class="hljs-title">useNotify</span><span class="hljs-params">(<span class="hljs-keyword">final</span> Object lock)</span></span>{
    <span class="hljs-keyword">synchronized</span> (lock) {
        <span class="hljs-keyword">if</span> (sub == <span class="hljs-number">96</span>) {
            num++; <span class="hljs-comment">// &#x9664;&#x4E86;&#x8981;&#x7528;notify&#x5524;&#x9192;&#x5916;&#xFF0C;&#x8FD8;&#x8981;&#x4FEE;&#x6539;&#x903B;&#x8F91;&#x53C2;&#x6570;&#xFF0C;&#x4E0D;&#x7136;wait&#x65B9;&#x6CD5;&#x53C8;&#x4F1A;&#x8FDB;&#x5165;&#x7B49;&#x5F85;&#x72B6;&#x6001;</span>
            lock.notify(); <span class="hljs-comment">// &#x53EA;&#x5524;&#x9192;&#x4E00;&#x4E2A;&#x7EBF;&#x7A0B;</span>
            <span class="hljs-comment">// lock.notifyAll(); // &#x5168;&#x90E8;&#x5524;&#x9192;    </span>
             System.out.println(<span class="hljs-string">&quot;&#x5524;&#x9192;&#x4E86; lock....&quot;</span>);
        }
        <span class="hljs-keyword">return</span> --sub;
    }
}
</code></pre>
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